DC Field | Value | Language |
---|---|---|
dc.contributor.author | 조영근 | - |
dc.date.accessioned | 2022-03-29T03:38:35Z | - |
dc.date.available | 2022-03-29T03:38:35Z | - |
dc.date.issued | 2021 | - |
dc.identifier.other | OAK-2015-09112 | - |
dc.identifier.uri | http://postech.dcollection.net/common/orgView/200000370334 | ko_KR |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/111917 | - |
dc.description | Master | - |
dc.description.abstract | Single hit compression tests were carried out at the temperature range of 800~1100 °C and the strain rate range of 0.01~1 s-1 for 15Cr-15Mn-4Ni based austenitic stainless steels containing either 0.1~0.3 wt.% of C or N. The high temperature strength, i.e. mean flow stress, increased as the concentration of either C or N increased. The mean flow stress, activation energy, and degree of lattice distortion of N-added steels were larger than those of C-added steels, while the dynamically recrystallized (DRXed) grain size and grain growth rate were smaller and slower in N-added steels. The effects of N on the high temperature strength were stronger due mainly to a stronger solid solution hardening effect which was attributed to the larger effective size of the N atoms compared to the C atoms. The dynamic recrystallization (DRX) was more suppressed in the N-added steels since N atoms strongly interact with moving dislocations, grain boundaries, or subgrain boundaries, which was evidenced by larger activation energy and peak stress. | - |
dc.language | eng | - |
dc.publisher | 포항공과대학교 | - |
dc.title | Effects of C and N on the high temperature deformation behavior of 15Cr-15Mn-4Ni based austenitic stainless steels | - |
dc.title.alternative | 15Cr-15Mn-4Ni 오스테나이트계 스테인리스강의 고온변형거동에 대한 탄소와 질소의 효과 | - |
dc.type | Thesis | - |
dc.contributor.college | 철강대학원 철강에너지소재학과 | - |
dc.date.degree | 2021- 2 | - |
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